2 Answers

Mine did that. I tried changing the timer but it didn't help. I noticed that the water level kept rising until the drain pump would be triggered by the overfill protection switch on the left side under the insulation. It turned out that the fill valve didn't close all the way and so the pan would never empty. A new fill valve (easy to install and cheap) fixed it!

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As a safety feature the dishwasher will automatically turn itself off whenever the door is opened. However, if the door is opened quickly while in a wash or rinse cycle some water may splash out of the dishwasher. For this reason it is recommended that the machine always be switched off before opening the door.

To Interrupt a Cycle

1. Press the on/off button to stop operation.

2. Wait at least 10 seconds (or until the water noises stop) before opening the door.

To Resume a Cycle

1. SHU/SHI models, close the door and press the on/off button.

2. SHV models, push the on/off button and close the door.

Changing a Cycle

For Bosch dishwasher models SHI 6800 and 4320, SHU 5300, 5310 and 6800 press the program button of the desired cycle TWICE. For all other Bosch dishwasher models, press the program button of the desired cycle ONCE. The chosen cycle button (or the light above it) becomes illuminated, showing that it has been selected.

* SHU 3030 and SHU 3130 models do not have program lights.

Cancelling a Cycle

Each control panel shows which buttons to simultaneously push to cancel a cycle. Refer to your dishwasher to find the cancel drain buttons on your particular model.

1. Press the indicated buttons at the same time and hold for approximately 3 seconds.

2. When the drain pump noises stop and the LED display or clean light indicate that the end of the cycle has been reached, the dish

washer is reset.

3. Press the on/off button to turn the dishwasher off.

4. The dishwasher is now ready to run a selected cycle. Add more detergent if necessary.

My Bosch DW SHU5302 also got stuck during a cycle and ran and ran. Turns out this is a known problem with these DW's. The problem is that a trace on the main board burns off that controls the heater. If the heater doesn't come on then the DW keeps running waiting for the water to heat up. Re-soldering this trace fixes this problem. If you get a repair guy out, he will only change the board. They are not allowed to re-solder which doesn't fix the problem for long as the same trace will burn off. Did this about 8 years ago and it is still fine.

When the heating element fails on dishwashers, the wash cycle water can not be heated high enough the activate the DW detergent powder.

Replacing the heating element should fix you right up.

Also, resist the temptation to switch the a cheap, generic powder. A brand name e.g. Electrosol or Cascade powder is proven to work well. The ultra-cheap powder will leave white patches on the dishes and it will not dissolve completely, even when the heating element is working properly.

On a Bosch dw, it has a light sensor to sense soil in the water.. if the control feels that the water going through the sensor is not clean/ or clean it will add or minus time..one thing you can do is make sure that your drain line from dw to sink drain is cleared of debris.. also, make sure you clean the filter at bottom of dw and make sure its reinstall correctly if you haven't already do so.. if your dw finish the cycle and come out clean, then the time on your dw is fine,, but if it don't finish and come out dirty.. then, it could be something other, but don't know til I get the full details on problem.. help this will do it for ya.. good luck.. mike

This sounds like a thermal stop as well. The unit wants to get up to a final rinse tempurature but can't reach it so just keeps going. If you have an amp probe you can check to see if the heater is coming on in the final rinse. If it is not, could be the thermistor of even the heater.

Certainly sounds like the float is stuck in the over filled position or possible a bad float switch. Could also be a bad water
fill valve - if you can blow air through it when removed then you need to replace it.
You can follow this link to troubleshoot your washer, but note that its not exactly for your model - http://www.thermador.com/replacementparts/main/pdfs/SHU-complete-troubleshooting-guide.pdf
Good luck!